gL 
Field results in codling moth control.--E. J. Newcomer, in charge 
of the Yakima, Wash., laboratory, has summarized his season's field work 
as follows: "Very good control of the codling moth was obtained with 
lead arsenate and mineral oil emulsion, but this combination is difficult 
to remove from the fruit. Fish oil does not control so well, but the 
residue is more easily removed. No difficulty in removing the arsenical 
residues is experienced if late sprays are of some nonarsenical with 
either fish oil or mineral oil. Very good results have been obtained with 
cryolite and postassium fluoaluminate used in this way (with adhesives), 
and fair results with nicotine or pyrethrun. Bands for codling moth 
control do not need so heavy a chemical treatment for use in the Pacific 
Northwest as in the East. There was no apparent advantage in a flanged 
band or in the other commercial bands tried. The 2-inch band was as ef-— 
fective as the 4-inch band. The use of some alpha naphthylamine with 
the beta naphthol seemed to make the bands somewhat repellent, but both 
these and the plain beta-—naphthol bands caught more worms than did the 
untreated bands." 
TRUCK CROP AND GARDEN INSECTS 
Correction.—-In the November, 1932, Monthly Letter, page 9, lines 
38-39, Heteroderes laurentii Guer. should be Cylas formicarius Fab. 
Low-temperature limit for gladiolus thrips.--R. H. Nelson, of the 
entomology greenhouse, Washington, D. C., reports that "Counts were made 
for mortality of Taeniothrips gladioli M. & S. from the first lots of 
corms kept at low temperatures. These lots had been in storage one 
month. There were 30 corms in each lot and they were held at tempera- 
wires) O01) 50°, 40%; and’ 50° fF. > respectively.""' At 30° °F. ; the mortality 
of larvae, pupae, and adults was 100 per cent; at 40° F., 81.13 per cent; 
aueoU°- F.;, 26.2 per cent: "After examination the corms were fumigated 
with cyanide to kill any living thrips that might have been missed and 
were then left in the greenhouse at approximately 70° F. for two weeks 
to check for hatching of eggs. None hatched in the 30° and 40° lots, 
but there was hatching and consequent reinfestation in the 50° lot." 
T. gladioli was observed to be breeding on amaryllis, a new host- 
plant record. All stages were found to be present. Streaking and crimp- 
ing of the petal edges were much like those in gladiolus. Some feeding 
on the foliage and main stem also occurred." 
Narcissus bulb fly more abundant near woods.--C. H. Martin, Sumner, 
Wash., reports that "Data now accumulated show rather definitely that 
proximity of narcissus bulbs to woods causes higher percentage of infes— 
tions of a field where the bulbs have been in the ground for from three 
to five years. In the section immediately adjacent to a second—-growth 
fir woods, the percentage of infested bulbs in four varieties, Princeps, 
Poeticus recurvus, Telamonius plenus, and Golden Phoenix were 18.7 per 
